Synthesis and Characterization of Iron Incorporated Schiff’s Base Hydrogel for Diabetic Wound Healing Therapy

Flashcards covering the vocabulary and core concepts of a research dissertation regarding insulin-loaded iron-incorporated hydrogels for diabetic wound therapy.

Schiff’s base

A chemical bond formed by the reaction of an aldehyde group (from oxidized cellulose) with a free amine group (from gelatin), resulting in an imine bond ($-C=N-$).

Hydrogel

A high molecular weight three-dimensional network of hydrophilic polymers that can swell in water or biological fluids while maintaining its structural integrity.

Oxidized Cellulose (OC)

A derivative of cellulose prepared using oxidizing agents like sodium periodate ($NaIO_4$) to introduce aldehyde groups, which act as crosslinking agents.

Gelatin

A natural bio-macromolecule derived from collagen that is non-toxic, biocompatible, and possesses a high water-absorption capacity, often used as a gelling agent.

Hemostasis

The first stage of wound healing that stops bleeding through vasoconstriction and the formation of a platelet plug.

Type 1 Diabetes

An insulin-dependent form of diabetes caused by an autoimmune reaction that stops the body from producing insulin.

Type 2 Diabetes

A non-insulin dependent form of diabetes characterized by the body's inability to effectively use the insulin it produces.

Insulin

A peptide hormone composed of an A-chain ($21$ amino acids) and a B-chain ($30$ amino acids) linked by sulfur atoms, which regulates glucose homeostasis.

Injectable Hydrogel

A class of hydrogel capable of undergoing a sol-gel transition, allowing it to be administered via syringe in a liquid state and solidify into a gel at a target site in vivo.

Diabetic Neuropathy

Nerve damage caused by high blood sugar levels that result in tingling and numbness, often making it difficult for patients to feel injuries.

Fourier Transform Infrared (FTIR) Spectroscopy

A spectroscopic technique used to identify chemical bonds and functional groups by measuring the absorption of infrared radiation.

X-ray Diffraction (XRD)

A non-destructive analytical technique used to determine the crystallographic structure, crystalline size, and orientation of materials.

Dynamic Light Scattering (DLS)

A technique used to measure the hydrodynamic size of particles in suspension by analyzing the speed of Brownian motion.

Zeta Potential

A measure of the electrokinetic potential or electric charge on a particle's surface, indicating the stability of a colloidal system.

Field Emission Scanning Electron Microscopy (FE-SEM)

An advanced imaging technique that uses electrons to capture high-resolution microstructure images and topological details of a sample's surface.

Drug Loading Efficiency (DLE)

A calculation used to determine the percentage of drug successfully incorporated into a carrier material.

Drug Encapsulation Efficiency (DEE)

A measure of the percentage of the initial drug amount that is successfully trapped within the drug delivery system.

Sol-gel Transition

The process where a polymer solution (sol) transforms into a three-dimensional solid network (gel) in response to physical or chemical stimuli.

Hemocompatibility

A test used to determine the safety of a material in contact with blood, specifically checking for the destruction of red blood cells (hemolysis).

Inflammatory Phase

The second stage of wound healing, triggered by cytokines, where white blood cells remove pathogens and damaged cells from the wound site.

Proliferation Phase

The third stage of wound healing where the wound is rebuilt with new tissue made of collagen and the formation of new blood vessels occurs.

Remodeling Phase

The final step in wound healing characterized by the formation of scar tissue and the development of new epithelium.